using python programming language please can someone write me the code for the solution below?

A snail climbs on a wall, it starts at the bottom and climbs up nn meters a day. Regretfully, every night it slides mm meters down.

Given the height of the wall HH, write a program to calculate how many days required for the snail to reach the top of the wall.

Input:

Three non-negative integers nn, mm, and HH separated by a space. For example:

3 2 11 

Output:

A single integer number, which is the number of days required for the snail to reach the top of the wall. For example:

9 

If the snail will never be able to reach the top of the wall print Fail

Test 1

Test Input

3 2 11

Expected Output

9

Test 2

Test Input

5 2 9

Expected Output

3

Test 3

Test Input

3 4 3

Expected Output

1

Test 4

Test Input

0 0 3

Expected Output

Fail